Seems like there is no way to assign a fixed channel to an AP or the entire network. For example, it seems - at least AFAIK - Sonos speakers would require all access points to use the same 2.4GHz channel, otherwise it is only possible to use the hidden, proprietary SonosNet. I can see this limitation won't possibly affect too many SMB customers, but considering Auba Instant On can be also a reasonable setup for home networks, it could be desirable.
@axthemax We are constantly working to enhance the solution. Existing and future customers are going to get enhanced features and software as part of future software updates. Customers will be able to update the software through the mobile app.